*{
    margin: 0;
    padding:0;
    list-style: none;
    box-sizing: border-box;
}
.wrap{
    width:600px;
    margin: auto;
}
table{
    width:100%;
    border-collapse: collapse;
}

table tr{
    height:60px
}
.result{
    text-align: center;
}
button{
    padding:6px 12px;
}

.mask{
    width:100%;
    height:100%;
    position: fixed;
    left:0;
    top:0;
    background: rgba(0,0,0,.3);
}

.content{
    left:50%;
    top:50%;
    position: fixed;
    transform: translate(-50%,-50%);
    background: #fff;
    padding:20px;
    text-align: center;
}